The circuit diagram for the dc power supply used in lab is shown connected to an external 20-2 resistive load in the figure below. The input voltage is 120 VAC

at 60 Hz. The transformer steps down the input voltage to two 28-VAC secondary windings which are connected in parallel. The diode bridge creates a full-wave rectifier output voltage, which drives the choke-input filter connected to the resistive load (three parallel 100-Q resistors plus an external 20-2 resistor). Assume each diode drops 0.8 V when conducting. (See Hart, pp126-127 regarding the functioning of this power supply).The diode bridge output voltage will resemble the full-wave rectifier waveform shown below: For this power supply circuit, assume the measured rectifier bridge output peak voltage, Vm = 38.0 V. Determine the power supply output dc voltage, Vo. (Select the one best answer from the choices given below,) v_{0}=\frac{2 V_{5}}{\pi}=\sum_{-2 i}^{\infty} \frac{4 V_{0}}{\pi n^{\prime}-1} \cos \left(n \otimes_{n} t\right) Fourier series representation for full-wave rectified wave